<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>HTML 练习</title>
</head>
<body>
<h1>一级标签</h1>
<h2>二级标签</h2>
<h3>三级标签</h3>
<h4>四级标签</h4>
<h5>五级标签</h5>
<h6>六级标签</h6>
<p>这是一个段落标签</p>
<p>文本样式：<b>加粗</b></p>
<ul>
    <li>无序1</li>
    <li>无序2</li>
    <li>无序3</li>
    <li>无序4</li>
</ul>
<ol>
    <li>1</li>
    <li>2</li>
    <li>3</li>
    <li>4</li>
</ol>
<table border="1">
    <tr>
        <th>标题1</th>
        <th>标题2</th>
        <th>标题3</th>
    </tr>
    <tr>
        <th>标题1</th>
        <th>标题2</th>
        <th>标题3</th>
    </tr>
    <tr>
        <th>标题12</th>
        <th>标题22</th>
        <th>标题32</th>
    </tr>
    <tr>
        <th>标题13</th>
        <th>标题23</th>
        <th>标题33</th>
    </tr>
</table>
</body>
</html>